package com.lagou.utils;

/**
 * @Author ZHAO Yudong
 * @Date 2020/11/6 14:26
 * @description：
 */

import com.lagou.annotion.MyAutowired;
import com.lagou.annotion.MyService;
import lombok.extern.slf4j.Slf4j;

import java.sql.SQLException;

/**
 * @author lijun
 * <p>
 * 事务管理器类：负责手动事务的开启、提交、回滚
 */
@Slf4j
@MyService
public class TransactionManager {

	@MyAutowired
	private ConnectionUtils connectionUtils;

	public void setConnectionUtils(ConnectionUtils connectionUtils) {
		this.connectionUtils = connectionUtils;
	}

    /*private TransactionManager(){

    }

    private static TransactionManager transactionManager = new TransactionManager();

    public static TransactionManager getInstance() {
        return  transactionManager;
    }*/

	public void beginTransaction() throws SQLException {
		connectionUtils.getCurrentThreadConn().setAutoCommit(false);
	}


	// 提交事务
	public void commit() throws SQLException {
		connectionUtils.getCurrentThreadConn().commit();
	}


	// 回滚事务
	public void rollback() throws SQLException {
		connectionUtils.getCurrentThreadConn().rollback();
	}
}
